copy_page_to_iter_nofault
size_t copy_page_to_iter_nofault(struct page *page, unsigned offset,
EXPORT_SYMBOL(copy_page_to_iter_nofault);
copied = copy_page_to_iter_nofault(ZERO_PAGE(0), 0, num, iter);
copied = copy_page_to_iter_nofault(page, offset,